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Zaluzania Montagnifolia: Essential Oil Composition and Biological Properties

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Zaluzania Montagnifolia: Essential Oil Composition and Biological Properties BOLETÍN LATINOAMERICANO Y DEL CARIBE DE PLANTAS MEDICINALES Y AROMÁTICAS 17 (3): 249 - 258 (2018) © / ISSN 0717 7917 / www.blacpma.usach.cl Artículo Original | Original Article Zaluzania montagnifolia: essential oil composition and biological properties [Zaluzania montagnifolia: composición del aceite esencial y actividades biológicas] Nemesio Villa-Ruano1, Yesenia Pacheco-Hernández2, Efraín-Rubio-Rosas3, José A. Zárate-Reyes3, Carlos J. Castro-Juarez1 & Sergio A. Ramírez-García1 1Universidad de la Sierra Sur, Ciudad Universitaria CP 70800, Miahuatlán de Porfirio Díaz Oaxaca, México 2Centro de Investigación en Biotecnología Aplicada, Tlaxcala, México 3Centro Universitario de Vinculación y Transferencia de Tecnología, Benemérita Universidad Autónoma de Puebla, Puebla, México Contactos | Contacts: Nemesio VILLA-RUANO - E-mail address: [email protected] Abstract: The chemical composition of the seasonal essential oils (2015-2016) from the leaves and flowers of Zaluzania montagnifolia is presented. The chemical content of those oils showed quantitative and qualitative differences. Germacrene D (19.9-29.8%), camphor (12.4- 19.4%) and β-caryophyllene (13.7-18.5%) were the most abundant volatiles in the leaves. The essential oils from the flowers contained high amounts of camphor (32.7-37.2%) limonene (19.8-24.9%) and germacrene D (3.2-7.3%). All the seasonal essential oils showed a potent in -1 vitro inhibition against HMG-CoA reductase. The essential oils from flowers (IC50, 40.5-55.1 µg mL ) showed better inhibition properties -1 -1 -1 than those of leaves (IC50, 84.4-123.5 µg mL ). Camphor (IC50, 72.5 µg mL ) and borneol (IC50, 84.4 µg mL ) exerted a non-competitive inhibition on the enzyme. Additionally, the hydrodistillates exhibited antibacterial activity against the phytopathogenic Pseudomonas syringae pv. tabaci TBR2004 (MIC, 62.7-76.5 µg mL-1) P. syringae pv. tomato DC3000 (MIC, 45.4-50.4 µg mL-1) and P. syringae pv. phaseolicola NPS3121 (MIC, 26.7-31.9 µg mL-1). Germacrene D (MIC, 35.4-66.2 µg mL-1) and β-caryophyllene (MIC, 36.5-54.2 µg mL-1) were the strongest anti-Pseudomonas syringae agents. Keywords: Zaluzania montagnifolia, seasonal essential oils, chemical profile, anti-HMG-CoA reductase, antibacterial. Resumen: Se presenta la composición química de los aceites esenciales estacionales (2015-2016) provenientes de hojas y flores de Zaluzania montagnifolia. El contenido químico de los aceites esenciales mostró diferencias cualitativas y cuantitativas. El germacreno D (19.9-29.8%), alcanfor (12.4-19.4%) y β-cariofileno (13.7-18.5%) fueron los volátiles más abundantes en las hojas. Los aceites esenciales de las flores contuvieron altas concentraciones de alcanfor (32.7-37.2%), limoneno (19.8-24.9%) y germacreno D (3.2-7.3%). Todos los aceites esenciales estacionales mostraron una potente inhibición in vitro contra la HMG-CoA reductasa. Los aceites esenciales de las flores (IC50, -1 -1 40.5-55.1 µg mL ) mostraron mejores propiedades inhibitorias que aquellos de las hojas (IC50, 84.4-123.5 µg mL ). El alcanfor (IC50, 72.5 -1 -1 µg mL ) y el borneol (IC50, 84.4 µg mL ) ejercieron una inhibición no competitiva sobre la enzima. Adicionalmente, los hidrodestilados exhibieron una actividad antibacterial contra los fitopatógenos Pseudomonas syringae pv. tabaci TBR2004 (MIC, 62.7-76.5 µg mL-1) P. syringae pv. tomato DC3000 (MIC, 45.4-50.4 µg mL-1) y P. syringae pv. phaseolicola NPS3121 (MIC, 26.7-31.9 µg mL-1). El germacreno D (MIC, 35.4-66.2 µg mL-1) y β-cariofileno (MIC, 36.5-54.2 µg mL-1) fueron los agentes más fuertes contra los patovares de Pseudomonas syringae. Palabras clave: Zaluzania montagnifolia, aceites esenciales estacionales, perfil químico, anti-HMG-CoA reductasa, antibacterial. Recibido | Received: September 6, 2017 Aceptado | Accepted: November 1, 2017 Aceptado en versión corregida | Accepted in revised form: January 20, 2018 Publicado en línea | Published online: May 30, 2018 Este artículo puede ser citado como | This article must be cited as: N Villa-Ruano, Y Pacheco-Hernández, E-Rubio-Rosas, JA Zárate-Reyes, CJ Castro-Juarez, SA Ramírez- García1. 2018. Zaluzania montagnifolia: essential oil composition and biological properties. Bol Latinoam Caribe Plant Med Aromat 17 (3): 249 – 258. 249 Villa-Ruano et al. Zaluzania montagnifolia and its biological activities INTRODUCTION halo blight diseases in Phaseolus vulgaris, The roots of Zaluzania montagnifolia (Asteraceae) Lycopersicon esculentum, Nicotiana tabacum and are traditionally boiled to prepare an infusion for Solanum tuberosum (González et al., 2000) which are treating type 2 diabetes mellitus (DM2) in Oaxaca, considered as basic crops in rural communities in México (Turner, 2012). Previous reports described México. Thus, plants with traditional uses in this the aerial parts of the plant as a source of communities can be screened for their anti- sesquiterpene lactones (zaluzanins) and kaurene type phytobacterial properties in order to propose diterpenes with hypoglycemic, cytotoxic and alternatives for the biological control of uterotonic properties (Krishna-Kumari et al., 2003). phytophatogens. Due to the lack of scientific Kaurenoids and other small molecules dissolved in information regarding the volatile profile and the hexanic fraction of the plant also exhibited biological activities of the essential oil from Z. allelopathic, antioxidant and antibacterial activities montagnifolia, the principal objectives of this work (Villa-Ruano et al., 2013). Despite the pleasant aroma were to report the volatile variation in the essential of the leaves and flowers of Z. montagnifolia, there is oil from the plant and to determine the specific effect no available information on the chemical composition of selected volatiles on the normal activity of HMG- of its essential oil. Essential oils from CoA reductase. We additionally report on the medicinal/edible plants are a potential source of small antibacterial effect of the hydrodistillates on some molecules with pharmacological activity. The Pseudomonas syringae pathovars which are essential oils from Lippia turbinata, Origanum associated to severe infections of potato, tomato and vulgare and Salmea scandens showed interesting in bean. vitro activity against fat absorption (Quiroga et al., 2013; Villa-Ruano et al., 2015a). These facts suggest MATERIALS AND METHODS that natural products from medicinal plants could be Plant material used in the modulation of fat metabolism. Some Z. montagnifolia (SCH. BIP.) SCH. BIP. volatile organic compounds such as geraniol and (Asteraceae), was collected in Miahuatlán de Porfírio limonene were apparently able to decrease the Díaz, Oaxaca, México (16° 20.63’ N, 0.96° 34.85’ W, activity of 3-hydroxy-3-methylglutaryl CoA 1580 masl) during 2015-2016. Aerial parts of the reductase (HMG-CoA reductase), a key enzyme in assayed plants were previously certified in the cholesterol biosynthesis (Pattanayak et al., 2009). FCME-Herbarium at UNAM-México where a Thus, volatiles from medicinal plants can exert an reference voucher 130910 was deposited. improvement in the metabolism of cholesterol. Natural inhibitors of cholesterol biosynthesis are Chemicals found in traditional plants and their inclusion as an Analytical grade n-hexane was purchased from J.T alternative for the treatment of hypercholesterolemia Baker. Anhydrous sodium sulfate was from Bell is being envisioned (Lin et al., 2015). It is well ReactivesMR. The HMG-CoA reductase enzyme, known that high levels of LDL-cholesterol particles NADPH, 3-hydroxy-3-methylglutaryl CoA, are a risk factor for the development of DM2 and also resazurin, mixtures of n-alkanes and authentic that patients with DM2 maintain those levels when volatiles were all from Sigma-Aldrich Co. they are incorrectly treated (Mooradian, 2009). Therefore, the investigation of natural products from Isolation of the essential oils medicinal plants with potential use as inhibitors of Leaves of Z. montagnifolia were collected and dried HMG-CoA reductase should be investigated. in an oven at 30° C for 3 days in darkness. Seasonal On the other hand, alternative biological leaf samples were collected in spring (March 2015), activities of medicinal plant must be explored. summer (July 2015), fall (October 2015), winter Antibacterial activity of essential oils has been (January 2015) and spring 2016 (March 2016). extensively demonstrated in pathogens of human, Seasonal flower samples were only collected in the however, the effect of these preparations against spring periods, during March 2015 and March 2016. phytopathogenic bacteria has been poorly 300 g of dried leaves from five different plant investigated (Villa-Ruano et al., 2015a; 2015b). P. samples were extracted by hydrodistillation (five for syringae pathovars are one of the most prevalent each season, n=5) in a Clevenger type apparatus for 3 microorganisms causing the bacterial brown spot and h in order to obtain five different essential oil Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas/250 Villa-Ruano et al. Zaluzania montagnifolia and its biological activities samples. Posteriorly, the essential oils were recovered oils or pure volatiles (0.02, 0.08 and 0.14 mg mL-1) with n-hexane and immediately dried over anhydrous sodium sulfate. The density (mg mL-1) and yields of Antibacterial activity the essential oils (w/w) were obtained and stock The effect of the essential oils on the in vitro growth solutions (200 mg mL-1) were prepared to evaluate of Pseudomonas syringae pv. tabaci TBR2004, P. the hydrodistillates on HMG-CoA reductase and to syringae pv. tomato DC3000 and P. syringae pv. perform antibacterial tests (Villa-Ruano et al., phaseolicola NPS3121, was investigated by the broth 2015a). microdilution method using rezasurin as an indicator of cell viability (Sarker et al., 2007). The incubations GC-FID and GC-MS analyses were performed with different concentrations of the These procedures were done in a Hewlett Packard essential oil or authentic standards of germacrene D, 6890 II series with a HP-5 capillary column (30m X camphor, limonene and β-caryophyllene (10-500 µg 0.25mm I.D.
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